324 PALiEONTOLOGT. 



shell is that of an Elenchus with carinated whorls. The species de- 

 Bcribed is L. princeps^ from the M. Oligocene of Lesperon, near Dax. 



C. P. G. 



TouRifOTJliR, R. Description des Coquilles fossiles des Paluns. 

 [Eossil shells from the Fahluns.] Journ. Conch. 3 ser. t. xiv. 

 pp. 288-308, pis. ix. x. 



The following new species are described and figured : — Lacuna Bour- 

 geoisie near 2/. eburniformis, M.Miocene, PontLevoy ; Mathilda Semperi, 

 near M. quadricarinata, Brocchi, same locality ; Scalaria Banoni, Cestas, 

 near Bordeaux ; Desmoulea nana, Pont Levoy ; Coralliophila Burdiga- 

 lensis, L. Miocene, Le Haillan near Bordeaux ; Coralliophila (?) nodu- 

 liformis, Pont Levoy ; Columbella Linderi, M. Miocene, Merignac, near 

 Bordeaux ; Meleagrina Bourgeoisi, Pont Levoy ; Lucina callipUryoOy 

 M. Miocene, Cestas. C. P. G. 



. New Pliocene shells, see " Addenda." 



Teaftschold, H. Die langlebigen and die unsterblichen Formen der 

 Thierwelt. [The persistent and undying types of AnimaJ Life.] 

 Bull. Soc. Imp. Nat. Moscou, No. i. pp. 165-183. 



Contrasts the variability of certain forms of animal life with the 

 persistence and immobility of others. Even in the variable forms the 

 variability is not indefinite, and he believes that changes of external 

 conditions have little to do with the origin of modifications of form. 

 Such proofs of variation as are afforded by palseontology do not, he 

 thinks, support the views of Darwin, but point to the probability that 

 variation has been effected per saltuni, each organism having an inhe- 

 rent power of modifying its form. He discusses the persistency of 

 certain types, pointing out that the sea must have varied in composi- 

 tion at different periods ; he adduces examples of the genera Chcetetes, 

 Lingula, Terehratula, RJiynchonella^ Spirifera^ Lucina^ Pinna, Natica, 

 Trochus, and Nautilus, which have endured through long periods with- 

 out undergoing much or any modification. He quotes species of each 

 genus which have been described from different formations under dis- 

 tinct names, but which he believes to be identical. Some forms he 

 thinks may fairly be called " undying." Thus, he believes the Trochus 

 ellipticus of the Silurian to be identical with the existing T, Niloticus ; 

 and he identifies Nautilus lineatus of the L. Oolites with the recent 

 N. pompilius. Finally, he thinks that, within certain limits, animals 

 have the power of altering their form to meet alterations in their sur- 

 roundings. ' H. A. N. 



Tribolet, Maurice de. Description des Crustaces du terrain neoco- 



mien du Jura neuchatelois et vaudois. [Neocomian Crustacea. 



from the Neuchatelese and the Yaudois Jura.] Bull. Soc. geol. 



France, 3 ser. t. ii. pp. 350-365, pi. xii. 



The new species described are : — JEglea Rohhuaui, L. Neocomian 



(marls of Hauterive) ; Callianassa infracretacea and Glyphea Couloni, 



same formation, Sainte-Croix ; Hoploparia Neocomensis, same formation, 



